Seems like there are loads of ABX listening tests (Carver Challenge, etc) which tell us there is no audible difference between any amps which deliver sound at your top listening levels within their design limits. Any particular choice of amplifier above a basic good design (about $400 seems to be enough)
Is what they are telling you? Do you really believe that s$&t?
You should listen to what your ears are telling you. If it's not something different you might need to abandon this hobby and try needlepoint.